ly _ Prefaoe. , 



majority of them are supported by public means, the Zoological Station in Xaples 

 is and always will be a private institution. I am proud to bave initiated, at my own 

 rlsk, a new movement which bas been so widely taken up. With tbe support of so 

 many of the European Governments, more especially that of the Gennan Empire I 

 bave succeeded in 10 years in bringing the Station into its present state. I owe, 

 boweA'er, no small debt of gratitude to those who, many of them witbout any 

 technical interest in tbe work, bave by subscribing to the ,, Fauna and Flora" ren- 

 dered its publieation possible. Tbe cost of publieation is so great that the sub- 

 scriptions of Biological Institutes and Public Libraries alone Avould not cover it and 

 I bave looked and must continue to look for subscriptions from those private indivi- 

 duals, who are wilhng to exercise their liberality in the support of Science. 



I would ask present subscribers to renew their subscriptions for another period 

 of 5 years and am presuming upon their wilHngness to do so, which bas been in 

 many cases expressed, in sending berev^^ith the first volume of the new serics: — 



Polycladidae by Dr. A. Lang. Part I. 



Any subscriber not wishing to renew the subscription will oblige by returning 

 the volume to the publishers, and in the event of their not doing so I shall take 

 it for granted that they wish to remain subscribers. 



A hst of the Monographs in band is enclosed. 



In order to avoid further confusion, the volumes will not, in future, bear 

 serial numbers. 



As heretofore the price to non - subscribers will be greater tben the sub- 

 scription-price. 



Naples, Milrz 1884. 



Prof. Anton Dohrn. 



